The daily challenge becomes four: every difficulty now gets its own board each day, with its own leaderboard. Play one or all of them - the streak counts any difficulty won on its day. A redesigned home screen puts today's actual board front and centre, with your rank and streak beside it. Plus a new app icon, undo, a proper win celebration, a breakdown of which techniques your board required, a home screen widget, an optional evening reminder, and a short welcome for new players.

A proper welcome: Sudoku Neo now opens with an animated launch screen - the grid draws itself in while the app gets ready. One small kindness: typing a digit on a cell you have already solved no longer counts as a mistake. A tap there could never change anything, so it is now simply ignored.

Sudoku Neo now speaks Japanese, German and Spanish - the full interface, including every hint explanation. Pick a language in Settings or follow the system. The store description was rewritten to say plainly what the game does: scores the shape of your solve, one shared daily board, hints that teach.

Past challenges. Every daily challenge since launch is now playable. Tap the calendar on the daily card and pick a day. The boards are the same ones everyone else played that day - they ship inside the app, so the archive works offline too. Archive results count towards your statistics, your best score and your best time. They do not go to the daily leaderboard and do not extend your streak: a streak means showing up on the day, so only the day itself counts for those. Also updated the advertising SDK.